Oxidation and biological reduction reactor, biofiltration method

Details Oxidation and biological reduction reactor, biofiltration method Oxidation and biological reduction reactor, biofiltration method

1991-12-02

1992-09-15

Silverman, Stanley S.

Liquid purification or separation

Processes

Treatment by living organism

210618, 210150, 210196, 210283, 210903, C02F 306

Patent

active

051475472

ABSTRACT:
The present invention concerns an oxidation and biological reduction reactor for liquid to be treated by upwards circulation and recirculation including, within a longitudinal vertical enclosure 5 accessible by an admission 9, a lower layer 1 of biomass fixation made of material whose density is lower than that of the liquid and an upper layer of fixation 3 of biomass made of material whose density is higher than that of the liquid, characterized in that the lower layer 1 is separated from the upper layer 3 by a transverse wall 2 preventing the passage of filtration materials between a lower zone located under the wall 2 and an upper zone above the wall 2, an oxidation gas input 8 under the upper layer 3 and above the wall 2, an outlet 10 for the treated liquid is recycled by a pump 12 and an outer pipe 11 on the inlet 9.

REFERENCES:
patent: 4076616 (1978-02-01), Verde
patent: 4198301 (1980-04-01), Iwatani
patent: 4800021 (1989-01-01), Desbos
patent: 4931138 (1990-06-01), Klein et al.
patent: 5079268 (1991-05-01), Rogalla

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